From: "Sébastien CRAMATTE" <s.cramatte@wanadoo.fr>
To: lartc@vger.kernel.org
Subject: [LARTC] Ethernet bridge overflow ?
Date: Fri, 23 Feb 2007 16:04:12 +0000 [thread overview]
Message-ID: <45DF107C.8080403@wanadoo.fr> (raw)
Hello,
I've setuped an ethernet bridge on a debian sarge 3.1 with l7-filter +
ipp2 shapper rules
The server is a supermicro p4sci + celeron pentium 4 base 3ghz + 512Mb
+ 2 ethernet e1000
One interface is connected to a cisco catalyst switch
The other interface is connected directly to a CMTS (a sort of router
for cable modem) configured as bridge too.
More than 20Mbps of bandwith cross this bridge. Most of this traffic is
p2p (~80%)
When traffic goes over 14Mbps the bridge seems to saturate (overflow ?
) and start to make colision and loose packets
I've take a look to this paper
http://facweb.cti.depaul.edu/jyu/Publications/Yu-Linux-TSM2004.pdf
And with a duron 1,3Ghz+512 mbps he obtain these values
Input Rate 28,444,444
(bps)
Latency 29
(us)
Throughput 28,000,000
(bps)
Linux CPU 77%
Occupancy
A duron 1,3 is less powered than a celeron p4 3 ... So I don't
understand why I've got this problem :(
When I make a "top" or "uptime" all seems that works well ...
I've got rrdtool graphs that check cpu and load and seems normal too ...
Does someone have got somes ideas ?
Any clue or tips to isolate/resolve the problem are welcome
Regards
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next reply other threads:[~2007-02-23 16:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-23 16:04 Sébastien CRAMATTE [this message]
2007-02-23 17:31 ` [LARTC] Ethernet bridge overflow ? Larry Brigman
2007-02-23 18:30 ` Sébastien CRAMATTE
2007-02-26 10:39 ` Ivan Vladimirov
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